I tried many ways but i can't fix this problem, system always restarting at random time, i cleaned my ram stick and fan but nothing changed.. then BSOD cames up once. I look up the event viewer, in the system i found this:
The computer has rebooted from a bugcheck. The bugcheck was: 0x0000009c (0x00000000, 0xf7723050, 0xb2000000, 0x1040080f). A dump was saved in: C:\WINDOWS\Minidump\Mini072611-06.dmp.
Please someone help me to fix this problem thanks!